Verizon Wireless pays all ob-gyn bills for pregnant employees, with reimbursements for Lamaze classes, breast pumps and lactation consultants.

Moms with an eye on the corner office would do well to apply to this New York City–based telecommunications giant, where women secured 43% of all management promotions and tuition reimbursements (up to $8,000 annually) last year. Its Diversity Leadership Institute helps women identify career goals and hone networking skills, while the three-day Professional Women’s Workshop offers leadership training. Plus, more than a dozen mentoring programs help guide women’s professional development. In 2008, the Wireless division introduced My Backfill, an accelerated succession-planning program that helped women nab 40% of new positions at the director level and above. Busy moms rely on two on-site child-care centers in Orangeburg, NY, and Alpharetta, GA; 10% discounts at 2,000 facilities nationwide; and in-home and center-based backup care costing $2 to $4 per hour.

Chairman & CEO: Ivan Seidenberg

Executive VP, Corporate HR: Marc Reed

Women managers/execs: 33%

Women among top earners: 33%

Women on board of directors: 17%

Women corporate executive hires in 2008: 0%

Women participating in management or leadership training in the past year: 79%

Women participating in formalized executive succession planning last year: 33%

Women promoted last year who utilized a formal flexible work arrangement: 31%

Formal compensation policies reward managers who help women advance: Yes